Local Group Policy > Computer Configuration > Administrative Templates > Windows Components > Windows Defender Antivirus.
And got a page full of comments that this antispyware function in MSSD eats a lot of memory.
My windows is up to date, my security drivers are up to date, at least windows 10 says so.
It goes as bad as making my PC unresponsive to the point of having to wait minutes to launch something simple like task manager. I have 8GB of RAM and I have to maintain high FPS in video games. The two common reasons for MsMpEng. I don't understand why it keeps eating this much memory. Some users also reported experiencing MsMpEng.exe high disk usage. Try to open the task manager and then check whether or not Windows Defender process msmpeng.exe still occupies much CPUÄisable Windows Defender in Group Policy: However, there have been many user reports on Microsoft support forums that sometimes the MsMpEng.exe can also be the cause of disproportionately high CPU and Memory usage. Other solution would be to reschedule Windows Defender Scan by changing the settings in the New Trigger window,for example the start time for scanning. To be more specific, the MsMpEng.exe process is responsible for real-time protection. MsMpEng.exe, known as the Antimalware Service Executable is a Windows Defender processes. Not quite sure of how you managed the Windows Defender exclusion from Scanning MsMpEng Files, but this is one of the occasions when Windows Defender process MsMpEng.exe will not eat up 100% CPU on Windows 10 anymore. If the Antimalware Service Executable (MsMpEng.exe) is showing high CPU usage in the task manager, follow these steps to fix the problem. What you can do to resolve msmpeng high disk usage or high memory is to make adjustments to Windows defender or MSE. But some times, on different computers, I have discovered that Microsoft Security Essentials (MSE) Antimalware service MsMpEng.exe causes high CPU usage. Since msmpeng.exe is the default program in Windows Defender or MSE, you cannot remove it. But as a background task, the Service is not supposed to utilize fore than 50% of the CPU resources. Hello, is quite normal for the Antimalware Service Executable to utilize high CPU usage.